Indirect water heater



Sept. 12, 1933. G, LlPPENcOTT 1,926,342

-INDIRECT WATER HEATER Filed Oct. 50, 1950 fitr/5.1.

Patented Sept. 12, 1933 UNITED STATES INDIRECT WATER'HEATER George H.Lippencott, Bronx, N. Y., assignor, by mesne assignments, to SomervilleIron Works; Somerville, N. J., a corporation of New Jersey Applicationoctober 90,1939. serial No. 492,327

2 Claims.

may be placed in or removed from the shell without disturbing anyexterior pipe fittings.

Another object is to provide ai coupling that will afford a water-tightconnection between the shell and fittings leading to the hot waterstorage tank.

Another object is to provide for facilitating g the operation ofcleaning the interior of the heater when deposits of solids accumulatetherein.

These and other objects will appear and be better understood as thespecification proceeds,

' reference being made to the accompanying drawing forming a partthereof in which:

Figure 1 is an elevation, partly in section, of

the heater, showing the coil in position and the coupling between theheater and connections to 'the hot water storage tank and heatingsource.

Figure 2 is a plan View taken on line 2-2 of Figure 1.

Figure 3 is a. fragmentary section taken on line 3 3 of Figure 1,showing the parts unassembled.

Referring more specifically to the drawing, the heater as a unit isdesignated by A.

The unit includes a shell or casing 5, within which isdetachablypositioned a coil 6. The casing accommodates inlet and outletheat conduits 7 and 8, and water conduits to and from the coil 6indicated by 9 and 10 respectively.

The casing 5 is preferably drum-shaped and is provided with covers 11and 12 at the top and rbottom. The heat conduits '7 and 8 and waterconduits 9 and l0 located respectively on opposite sides of the wall ofthe casing.

The construction facilitates cleaning of the casingV as it is merelynecessary to remove the bottom cover in order to `eliminate deposit.

The construction also affords access `to the coil 6 without removingexterior pipe fittings. It also permits of forming a battery of heatingunits, not shown, in a minimum space by removing a Atop and bottom coverrespectively of two units and arranging them in` a superposition end toend. This will permit of increasing the Volume of Water to be heated ina minimum of space in a series of coils.

.The water pasages 9 and 10 from the coil 6 consist of the usual headers13 formed on opposite ends of the coil in the usual manner. The freeends of the headers are provided with internal threads to receive angedelements 14 detachably connected to annular elements of ground jointunions 15, which accommodate intermediate elements indicated by 16. The`elements 16 are internally threaded at their'front ends and havethreaded flanges 1'1 at the rear thereof to re ceive the unions 15.

Openings 18, having recesses 19 in bosses 20 n of the casing 5 areadapted to receive sleeves 21 on which are formed lugs 22 for engagementwith the recesses 19. The recesses 19 extend but part way through thebosses 20 to form annular flange 22 and the lugs 22 register with therecesses so as to form tight connections and prevent the sleeves fromturning in the openings.

The sleeves 2l have heads 23 formed on their outer ends to engage thebosses20 and are internally threaded to receive pipes 24. The inner endsofthe sleeves have reduced portions 21 and are externally threaded forengagement with elements 16 and for reception of gaskets 25.

When it is desired to assemble and connect the heating unit A, sleeves21 are inserted in bosses 20 so that the lugs .22 nt into recesses 19,and the inner ends extend into the casing. The elements are then screwedinto place. 1 The covers 11 and 12 are, of course, removed from thecasing 5 and the coil 6, on which have previouslyv been assembledheaders 13 and flanged elements 14 with their unions 15 may be placedtherein. Upon alignment of the unions 15 with the elements v16,engagement there between may then be effected by turning unions 15 tothe right which will force flanged elements 14 into tight engage--y mentwith 17. This can readily be accomplished as lugs 22 in recesses A19will prevent sleeves 21 from turning, and the possibility of twistingthe headers and thereby damaging the coil during this operation iseliminated. `Element 16 then acts as a lock-nut between the sleeve 21and los adapted for connection withV a heating medium.'-

and having the one side provided with openings having recesses in thewalls thereof, a; coil detachably located Within the casing,sleevesdetachably positioned within the openings yin the side of the casing andadaptedfor connection with inlet andk outlet Water conduits, lugscarried by the sleeves and engaging inthe recesses, and

couplings for detachably connecting the ends of the coil to the sleeves.

2. A Water heating unit of the indirect type including a casing havingthe interior thereof adapted for connection with a heating medium andhaving one side thereof provided with openings; sleeves detachably andnon-rotativel-y positioned Within the openings and each having its innerend externally threaded and extending beyond the surface of the Wall ofthe casing, annular elements received by said ends, a coil detachablylocated Within the casing, annular elements d'etaclrably connected withthe ends of the coil andA having ang'es formed on their outer ends, andintermediate connections between the sleevesv and the annular elementsof the coil.

' GEORGE H. LIPPENCOTT.

